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(No Model.)

POLSOM.

MACHINE FOR SA'WING STONE- No. 274,926. Patented Apr. 3 18.83.

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UNITED STATES PATENT OFFICE.

ANDREW FOLSOM, OF WARREN, ASSIGNOR TO HIMSELF AND WILLIAM L". I HILTON, OF PROVIDENCE, RHODE ISLAND.

MACHINE FOR SAWING STONE.

SPECIFICATION forming part of Letters Patent No. 274,926, dated April 3, 1883.,

Application filed August 28,1.882. (No model.)

To all whom it may concern:

Be it known that I, ANDREW FoLsoM, of Warren, in the county of Bristol and State of Rhode Island, have invented an Improve- Inent'in Machines for Sawing Stone, of which the following is a specification.

The nature of my invention consists in the combination of a horizontally-revolving bandsaw for cutting stone with a band-saw pulley lo the face of which is made narrower than the width of the said band-saw, and provided at its upper edge witha radially-projecting flange, serving to prevent the band-saw from moving upward on the pulley when operating under pressure to out the stone.

. It also consists in the combination of a horizontally-revolvin g band-saw for cutting stone with a band-saw pulley the face of which is made narrower than the said band-saw, and

which is provided onits upper side with a recess adapted for the reception of sand and water and with perforations for guiding said sand and water to the side of the band-saw.

It alsoconsists in the combination of a horizontally-revolving band-saw with two horizontal pulleys adapted for the band saw and secured to sliding upright shafts, which are made to move up and down simultaneously by means of connecting-levers.

0 Figure 1 is a front elevation of the machine. Fig. 2 is an end elevation of the same. Fig. 3 is a horizontal section taken in the line a: a: of Fig. 1. Fig. 4 is an axial section of one ofthe band-saw pulleys, taken in the line 2 z of Fig.

5 3. Fig. 0 is a face elevation of a circularlycut grave-stone.

In the drawings, A is the frame of the machine, to which the sliding upright sharts B B are secured by means of the boxes 0 G G 0.

o To the-lower ends of the shafts B Bare securedthe pulleys D D, upon which is placed the metallic band E for sawing the stone by means of the application of sand and water to the surfaceof the band, and to the shaft B is 4 5 also secured the pulley M for driving the machine. .lhe band-sawdriving-pulley D may be made of the full width of the band E, and may be faced with leather or rubber to increase the friction between the band-saw and the upper side of the pulley D is provided with a recess, F, around the outer edge of which are made the holes I) 1), serving to allow the sand and water placed in the recess F to pass downward to the side of the band-saw E, and thence to the cut formed by the action of the band-saw upon the stone.

To the upper end of the shafts B B are secured the loose collars G G, held between the fixed collars H H. and to which are pivoted the forked levers I I, whichv are also pivoted 7o to'the link-standards J J, and to the adjacent inner ends of the levers I I are pivoted the rods K K, which are likewise pivoted to the lever L, upon the movement of which the shafts D D, connected therewith, will be 7 equally elevated or depressed, thus preserving the proper relative horizontal position of the pulleys and the band-saw.

Under the pulleys D D and band E is placed the removable shallow box N, adapted 8 to hold the water and sand which escapes from the out made in the stone, which stoneis to be properly secured in a horizontal position within the box, and the said box is to be firmly held by suitable means while the stone 8 is being acted upon by the band-saw E.

My improved machine is specially adapted to rounding off the top of grave-stones, as shown in Fig. 5, and for similar purposes, and to effect this result the stone 0 is first secured 0 within the box N and placed centrally under the machine, so that the projecting curved portion of the band at the periphery of the pulley D may rest at the proper point on the stone. If the machine be now set in motion, 5 and the shafts B B are gradually fed down ward as the stone is worn away by the revolution of the band-saw E in conjunction with the O will be cut off, as described.

In case it is desired to cut off the end of the stone square, the stone is to be properly arranged under that portion of the band-saw E which lies between the peripheries of the pulleysD D, and the pulleys and hand fed downward by means of the levers, as before.

I claim as my invention-- 7 1. In a machine for sawing stone, the combination of the horizontally-revolving bandsaw with the wide driving-pulley and the narrower guide-pulley attached to the end of a shaft, and provided with a flange, whereby the saw is adapted to cutting stone in circular form, substantiallyas described.

2. In a machine for sawing stone, the combination of the horizontally-revolving bandsaw with the band-saw pulley, the face of which is made narrower than the said band-saw,-and which is provided upon its upper side with a recess adapted for'the reception of sand and water, and with perforations for guiding said sand and water to the side of the band-saw for cutting the stone, substantially as described.

ANDREW FOLSOM. Witnesses:

'SooRATEs ScHoLFrELD, HARMON S. BABCOCK. 

